Stoker and the like



sTQKER AND THE LIKE Filed June 20, 1927 4 Sheets-Sheet. 1

BY @fn-LM VWM ATTORNEY;

April 24, 192s. 1,667,230

' W. WARD STOKER AND THE LIKE Filed Jim@ 20. 1927 4 Sheets-Sheet 2 JNVENTOR. Wilburt Ward BY @ffmc/14510) April 24, l1.923. 1,667,230

w. WARD STOKER AND THE LIKE Filed June 2o. 1927 4 sheets-sheet :s

INVENTOR. Wilbur! Wird A TTORNEYS April 24,1928. 1,667,230

w. WARD s'roxsn AND THE LI KE Filed June 2o. 1927 4 sheets-sheet 4 IN VEN TOR. Wlbur wird *BY @www ATTORNEYS Patented Apr. 24, 1928.

UNITED'STATES PATENT LGFFICE.

Winsum' wann,

F FOREST, OHIO.

- sroxnn AND THE Lm.

Application led June' 20, 1927. Serial No. 199,938.

The invention relates to stokers or thelike and has as an object the provision of means for feeding coal to furnaces in'small quantities at a time or for feeding material to elevators gradually whereby to prevent clogging the elevator.l It may also be used for drawing hot lime from a lime kiln con-vv tinuously.

lt is an object of the invention to provide la device of this character having` a wide range of quantity ad'ustment.

lt is a further obJect of the invention to provide a ldevice of this character that will -feed or pass minute quantites at a time With- Fig. 3 is a. detail end elevation from the right in Fig. 1;

Fig. 4` is a detail elevation of the discharge opening'seen as in Fig.- 2 showing filler plugs in lace;

Fi 5 isa etail plan view of a connecting lmk partly broken away and shown in section;

Fig. 6 is a side view artlyink central verfi, 33 pivoted at 34 upon a shaft 35 passing tical section of a modi ed form; l Fig. 7 is a plan view upon an enlarged scale of the fuel agitator and feeder of Fig. 6;

'Fig 8 is a detail section on line 8.-8 of Y Fig. 6 shownpartly in elevation;

Jig. 9 is a detail vertical section on line 9-9 of Fig.- 6 upon an enlarged scale and Fig. 10 is a detail side elevation/of the discharge ch-ute of Fig. 6 showing a. modified form.

As shown in Figures 1 'to 5, inclusive, the device comprises a hopper 10 dellverin to a shovel box 11 having an arcuate shove operating in its bottom, the bottom being s own Vopen at 13 for the pro'ection there-- through 'of the ears 14 carried y the shovel,

-to which ears there is connected a link 15 -pivoted at 16 to a. block-17 slidably mounted upon an arm 18 pivotedl at 19 to a portion of the bottom o the box.

To cause movements of the shovel to take place upon the arc of a. circle concentric with the bottom of the shovel box the ears 14 are shown as connected to cross-headmembers 20,21, the ends of which members are connected to arms 22 pivoted to shaft 23 u on the center of the circle of which the siovel 12 is an arc.

To cause oscillator movements of the shovel, the arm `18 is s own as connected by means of a link 25 toa crank 26 adapted to be operatedl through suitable reducing mechanism by means of a motor 27, the reducing mechanism being shown diagrammatically in Fi 1 at 28. I

o permit movements of the arm. 18 in the event that the shovel 12 should be ting into the box, without breakage of the parts, the slidable block 17 is shown as attached to a rod 29 slidable in a block 30 suli.

ported for movement about the axis 19.

cause the shovel 12 to operate under normal conditions the rod 29 is shown as carrying a weight 31 suflciently heavy to insure that the shovel12 shall operate but which weight will yield upwardly if the `shovel is held stationary w ile the motor is still running. The stroke of the shovel may be adjusted by adjusting a collar 32 upon the rod 29 which collar has screw-threaded engagement therewith, thus varyingthe ositlon `of the block 17 upon the arm 18 A vw en the weight is down. Y To prevent gases from escaping through the shovel box, there is shown a seal gate through the wallsof the delivery box 36, which shaft has rigidly secured thereto arms 37 having their ends connected to links 38 shown in detail in Fig. 5, the `other ends of the links 38 being connected to a crosshead 39 pivoted to the lower end of the arm 18 as at 40.

The links 38 are shown as transmitting their power to springs 41, as shown in Fig. 5, one end of spring 41 abuttin andinterlocking with a collar 42 carrieg by tubular member 43 havin bifurcated end 44 for connection with t e cross-head 40 throu h the medium ofshort link 45 shown in Fig. 1. The other end of the spring 41 is shown as abutting against and interlocking with a pin 46 passin through rod 47 telescoping with the tubu ar member 43 and having at its ends bifurcated member 48A for #tion to the arm 37.

stalled, as by means of achunk of iron get- V vas rWith this structure the links 38 will transmit the ordinary amount of power for operation of the seal gate 33 to cause the gate to open as the shovel 12 feeds fuel forwardly but thespring 41 will yield if the gate becomes clogged.

To provide an adjustable'throat for the shovel boX 11, there is shown a flap 49 hinged upon a shaft 5G journalled in the walls of the shovel box, the shaft 50 having an arm 51 connected to a link 52 by means of a stud bolt and Wing nut 53 working in a slot 54 in the linkA 52 whereby the position of flap 49 may be adj usted.

In the form of Fig. 1, the shovel is shown as delivering to a chute 54 which may have a suitable form of fuel spreader (not shown) at its outlet. This form of device is shown -supported by means of a bed 55 and a strut 56. The chute 54 is shown as attached to the shovel box 11 by means of bolts 57 and 58 which may be removed when the form of the device shown in Figures 6 et sq. is to be substituted. 'p y To prevent access of material fed by shovel 12to the edges of the shovel, the box 11 is shown as formed upon its inner walls with channels 59, within which channels lips 60 formed upon the upper surface of the shovel at its edges are received. To reduce the cross-sectional area of the shovel box at its bottom when small amounts of material are to be delivered, filler blocks 61 are shown which .may be secured to the walls of the box by means of screws 62. i y

When the device is to be used with a furnce which must be fed from the side as distinguished from the overhead feed ofpFig` 1,

the4 formof the device shown by Figures 6- to 10 inclusive may be utilized. As there shown the box 36 is removed and the member 64 is bolted onin'its stead, which member '64 is shown as connected-with a tubular member 65 into which the shovel 12 delivers material.` To agitatefuel delivered to the tubular member 65'by' the shovel,l there is shown afeeder 66, shown 'in detail in Fig..7, having a-rod-like portion 67 passing through an opening 68. 'in the bottom off the end wall of the member-64 andconnected by means of a 1ink69 tofthe lower end of the arm 18. The agitator" is show as 7formed with a nseries of shoulders 70 adapted when the a itator is reciprocated toy feed fuel forwar ly .i opening at 73, adapted to `to an opening 71 in the end of a chute from whence the fuelmay vfall into the furnace, illustrated diagrammatically at 72. By means of this form of device quantitiesof `fuel as small as two be fed. Y

To cool the tube 65,'thereV` is shown an be closed by means 4of a damper 74, whereb air is admitted to i the tube and drawn t erethrough by the draft of the furnace.' l

" feeder,

ounces per minute may V The form of device'of Figures 6 to 10 insuspended from the ceiling of the basement as by means of hangers 75 supporting the bed 55 upon which the Stoker is mounted.

When the grate to which fuel is to be fed istoo long to successfully be fed at itscenter only, the form of chute 65 of Fig. 10 may be utilized which is formed with an opening may discharge some of the fuel upon one portion of the grate while the opening 7l discharges fuel at another portion of the grate. The chute 66 is shown as provided With a flap 77 to prevent excessive admission of gases of lcombustion to the chute.

`The operation of the device will be clear from the above description. M inor changes may be made in the physical embodiment of the invention within the scope o'l' the appended claims without departing from the spirit thereof.

l claim:

l. A Stoker comprising in combination, an

slidably mounted on said arm, a link ivotally connected with said block and to'sald feeder, a block pivotal'ly mounted upon the axil of said arm, a lrod slidably mounted in said last named block and rigidly secured to said first named block, a weight mounted on said l arm and means to oscillate said arm whereby when said feeder is stalled during oscillation of said arm, said slidable block may lift'said weight to allow continued oscillation of said 3. A stoker comprising in combination, an oscillating feeder, a throat through which material is fed by said feeder, driving means for said feeder comprising an oscillati arm, a. link connecting said arm with sa' a seal gate for said throat, a link cotnected to said arm for oscillating saidseal gate in synchronism with the movement of said feeder.

4. A Stoker comprising in combination, anl

oscillating'feeder, a throat through which material is fed'by said feeder, driving meant for said feeder comprising an oscillating arm, a link connecting said arm with sai feeder, a seal gate `for said throat, a link con- 76 intermediate its length which nected to said arm for oscillatitng said seal said agitator and feeder whereby to'advance 35 gate in s nchronism with the movement of said fee er means whereby said link may be resilientiy lengthened or shortened upon stalling of said seal gate during operation of said arm. f

material through said tubular member.

8. `A stoker comprisin in combination, an oscillating feeder, a tub ar member to which material 1s fed having a'delivery opening at its end and a second o ning intermediate its 5. A Stoker comprising in combination, an;L lengthV for delivery o a portion of the maoscillating feeder, means for drivingl said feeder, la throat through whichmaterial is fed by said feeder a gate for controlling the opening of said throat, said gate journalled upon a shaft mounted in the wall thereof an arm mounted on said shaft forming al bell crank with said gate, a link pivoted exterior,

1y of said throat connected to said arm and.

means for adjusting said connection whereby to vary the opening of .said throat.

, nect -to the wall of said throat, a material agitator land feeder reciproca-bly carried by said tubular member, means for reci rocat' ing said last named means by the riving means of said feeder. f

7. A stokelfcomprisij iin combination., an

oscillatingfeeder, a tubu ar member to which material is fedby said' feeder, a material agitator and feeder reciprocably carried by" ,said tubular .member -comprising an elonk xlated lmember having forwardly directed oulders upon its sur ace, meanslfor simultaneously driving saidrst named feeder and l 4 terial advanced through said tubular member, a material agitator and feeder reciprocably carried by. said tubular member, meansv forl driving both said feeding members in common.

9. A Stoker comprising in 'combinatie a feeder box having lower edges of the wa said revent escape of materia about theedges o the shovel and means for oscilvesadjacent t e. thereof, an oscillat-d ing yshovel havingl ridges enterin v g grooves to 6. A stoker comprising in combination, an

latng said shovel in the bottom of said box.

10.A Astoker comrising in combination, a material receiving x,v a shovel oscillatably mounted in the bottom of said box, means .for

varying the cross-sectional area of said box comprising filler blocks removabl secured to the lower portionof thewalls o said box.

11.. A Stoker comprsin incombination, a material receiving boxV avin an arcuate bottom, an arcuatershovel osci ating in said pivotally moilnted upon an axis at the center of said arc,means for'oscil1atin said shovel 'about said center concentric wi the bottom ae-smi bex. f

' vwILBUnT waan.

bottom, a' link connected lto said shovel andv v- 

